This software is meant for supporting research into Low Density Parity Check (LDPC) codes. It also includes modules for operations on dense and sparse modulo-2 matrices, and for random number generation.
You can browse the documentation for the current release below, and download the software from the installation page:
Release of 2006-02-08.
The following old releases are also archived here:
Release of 2001-11-18.
Release of 2001-05-04.
Release of 2000-03-19.